2000年01月英语四级试题（阅读）
2007-10-18来源:
Part ⅡReading Comprehension(35 minu tes)
Directions: There are 4 passages in this part.Each passage is followed by some questions or unfinished statements.For each of them there are four choi ces marked A)， B)，C) and D) .You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.
Questions 21 to 25 are based on the following passage:
Unless we spend money to spot and prevent asteroids (小行星)now，one might crash into Earth and destroy life as we know it， say some scientists.
Asteroids are bigger versions of the meteoroids (流星) that race acros s the night sky.Most orbit the sun far from Earth and don’t threaten us.But th ere are also thousads whose orbits put them on a collision course with Earth.
Buy $ 50 million worth of new telescopes right now.Then spend $ 10 million a year for the next 25 years to locate most of the space rocks.By the time we spot a fatal one， the scientists say，we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons.But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs.Experts think an asteroid big enough to destroy lots of life might strike Earth once eve ry 500， 000 years.Sounds pretty rare-but if one did fall， it would be the end of the world.“If we don’t take care of these big asteroids， they’ll take care of us，”says one scientist.“It’s that simple.”
The cure， though， might be worse than the disease.Do we really want fleets of nuclear weapons sitting around on Earth?“The world has less to fear from
doomsday(毁灭性的) rocks than from a great nuclear fleet set against them，” said a New York Times article. 21. What does the passage say about asteroids and meteoroids?
A) They are heavenly bodies different in composition.
B) They are heavenly bodies similar in nature.
C) There are more asteroids than meteoroids.
D) Asteroids are more mysterious than meteoroids. 22. What do scientists say about the collision of an asteroid with Earth?
A) It is very unlikely but the danger exists.
B) Such a collision might occur once every 25 years.
C) Collisions of smaller asteroids with Earth occur more often than expected.
D) It’s still too early to say whether such a collision might occur.23. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
A) It sounds practical but it may not solve the problem.
B) It may create more problems than it might solve.
C) It is a waste of money because a collision of asteroids with Earth is very unlikely.
D) Further research should be done before it is proved applicable. 24. We can conclude from the passage that .
A) while pushing asteroids off course nuclear weapons would destroy the world
B) asteroids racing across the night sky are likely to hit Earth in the near future
C) the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime
D) workable solutions still have to be found to prevent a collision of asteroids with Earth. 25. Which of the following best describes the author’s tone in this pass age?
A) Optimistic. B) Critical. C) Objective. D) Arbitrary.
Questions 26 to 30 are based on the following passage:
Believe it or not，26. The passage mainly discusses .
A) a new way of highway speed control
B) a new pattern for painting highways
C) a new approach to training drivers
D) a new type of optical illusion
A) they should avoid speed - related hazards
B) they are driving in the wrong lane
C) they should slow down their speed
D) they are approaching the speed limit
A) try out the Japanese method in certain areas
B) change the road signs across the country
C) replace straight，30. What does the author say about straight，United States .
B) They tend to be ignored by drivers in a short period of time.
C) They are applicable only on broad roads.
D) They cannot be applied successfully to traffic circles.
A) To show the inability of trains to compete with planes with respect to speed and convenience.
B) To stress the influence of the automobile onAmerica
C) To emphasize the function of travel agencies in market promotion.
D) To illustrate the important role of persuasive communiation in changing consum-er attitudes.
A) trains were not suitable for short distance passenger transportation
B) trains were not the fastest and most convenient form of transportation
C) trains were not as fast and convenient as they used to be
D) trains could not compete with planes in terms of luxury and convenienceAmerica
A) they could focus on meaningful travel experiences
B) they could increase the effectiveness of the TV programs
C) their profits could be increased by some 15 percent
D) most travel - lovers and nervous fliers were believed to be among the audiences
A) tiny globulesB) watery regions
C) bacteria communities D) little compartments
40. Commercial application of the research finding will be possible if s alad cream can be made resistant to bacterial attack ______ .
A) by varying its chemical compositionB) by turning it into a solid lump
C) while keeping its structure unchanged D) while retaining its liquid form
Directions: There are 4 passages in this part.Each passage is followed by some questions or unfinished statements.For each of them there are four choi ces marked A)， B)，C) and D) .You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.
Questions 21 to 25 are based on the following passage:
Unless we spend money to spot and prevent asteroids (小行星)now，one might crash into Earth and destroy life as we know it， say some scientists.
Asteroids are bigger versions of the meteoroids (流星) that race acros s the night sky.Most orbit the sun far from Earth and don’t threaten us.But th ere are also thousads whose orbits put them on a collision course with Earth.
Buy $ 50 million worth of new telescopes right now.Then spend $ 10 million a year for the next 25 years to locate most of the space rocks.By the time we spot a fatal one， the scientists say，we’ll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons.But the cost wouldn’t be cheap.
Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs.Experts think an asteroid big enough to destroy lots of life might strike Earth once eve ry 500， 000 years.Sounds pretty rare-but if one did fall， it would be the end of the world.“If we don’t take care of these big asteroids， they’ll take care of us，”says one scientist.“It’s that simple.”
The cure， though， might be worse than the disease.Do we really want fleets of nuclear weapons sitting around on Earth?“The world has less to fear from
doomsday(毁灭性的) rocks than from a great nuclear fleet set against them，” said a New York Times article. 21. What does the passage say about asteroids and meteoroids?
A) They are heavenly bodies different in composition.
B) They are heavenly bodies similar in nature.
C) There are more asteroids than meteoroids.
D) Asteroids are more mysterious than meteoroids. 22. What do scientists say about the collision of an asteroid with Earth?
A) It is very unlikely but the danger exists.
B) Such a collision might occur once every 25 years.
C) Collisions of smaller asteroids with Earth occur more often than expected.
D) It’s still too early to say whether such a collision might occur.23. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?
A) It sounds practical but it may not solve the problem.
B) It may create more problems than it might solve.
C) It is a waste of money because a collision of asteroids with Earth is very unlikely.
D) Further research should be done before it is proved applicable. 24. We can conclude from the passage that .
A) while pushing asteroids off course nuclear weapons would destroy the world
B) asteroids racing across the night sky are likely to hit Earth in the near future
C) the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime
D) workable solutions still have to be found to prevent a collision of asteroids with Earth. 25. Which of the following best describes the author’s tone in this pass age?
A) Optimistic. B) Critical. C) Objective. D) Arbitrary.
Questions 26 to 30 are based on the following passage:
Believe it or not，26. The passage mainly discusses .
A) a new way of highway speed control
B) a new pattern for painting highways
C) a new approach to training drivers
D) a new type of optical illusion
A) they should avoid speed - related hazards
B) they are driving in the wrong lane
C) they should slow down their speed
D) they are approaching the speed limit
A) try out the Japanese method in certain areas
B) change the road signs across the country
C) replace straight，30. What does the author say about straight，
B) They tend to be ignored by drivers in a short period of time.
C) They are applicable only on broad roads.
D) They cannot be applied successfully to traffic circles.
A) To show the inability of trains to compete with planes with respect to speed and convenience.
B) To stress the influence of the automobile on
C) To emphasize the function of travel agencies in market promotion.
D) To illustrate the important role of persuasive communiation in changing consum-er attitudes.
A) trains were not suitable for short distance passenger transportation
B) trains were not the fastest and most convenient form of transportation
C) trains were not as fast and convenient as they used to be
D) trains could not compete with planes in terms of luxury and convenience
A) they could focus on meaningful travel experiences
B) they could increase the effectiveness of the TV programs
C) their profits could be increased by some 15 percent
D) most travel - lovers and nervous fliers were believed to be among the audiences
A) tiny globulesB) watery regions
C) bacteria communities D) little compartments
40. Commercial application of the research finding will be possible if s alad cream can be made resistant to bacterial attack ______ .
A) by varying its chemical compositionB) by turning it into a solid lump
C) while keeping its structure unchanged D) while retaining its liquid form
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